NU545 CHAPTER 11 EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED.
Dr. Hans Selye: Known for
- Worked to discover a new sex hormone.
- Injected ovarian extracts into rats
Dr. Hans Selye: Witnessed
1. Witnessed:
- Enlargement of the adrenal cortex
- Thymic atrophy
- Development of bleeding ulcers in the stomach and duodenal lining
2. Witnessed these changes with many agents and called these stimuli stressors.
general adaptation syndrome (GAS).
Nonspecific response to noxious stimuli
GAS three stages:
1. Alarm stage: Arousal of body defenses—fight or flight
2. Stage of resistance or adaptation: Mobilization that contributes to fight or flight
3. Stage of exhaustion: Progressive breakdown of compensatory mechanisms. May lead to the onset of
disease
Alarm stage:
Stressor triggers the hypothalamic-pituitary-adrenal (HPA) axis.
- Activates the sympathetic nervous system (SNS).
, Resistance (adaptation) stage:
Begins with the actions of adrenal hormones.
- Cortisol, epinephrine, and norepinephrine
Exhaustion stage (allostatic overload):
Occurs only if stress continues and adaptation is not successful.
A person experiences stress when:
a demand exceeds the person's coping abilities.
Stress can results in reactions such as:
disturbances of cognition, emotion, and behavior that can adversely affect well-being
Reactive response:
Involves psychologic stressors.
Anticipatory response:
Anticipates a disruption in homeostasis.
Conditional response:
- Associates a stimulus with danger.
- May cause posttraumatic stress disorder (PTSD) or phobias.
Stress r/t diesease:
- Can precipitate disease.: Cardiac disease
- Can worsen an existing disease
COMPLETE SOLUTIONS VERIFIED.
Dr. Hans Selye: Known for
- Worked to discover a new sex hormone.
- Injected ovarian extracts into rats
Dr. Hans Selye: Witnessed
1. Witnessed:
- Enlargement of the adrenal cortex
- Thymic atrophy
- Development of bleeding ulcers in the stomach and duodenal lining
2. Witnessed these changes with many agents and called these stimuli stressors.
general adaptation syndrome (GAS).
Nonspecific response to noxious stimuli
GAS three stages:
1. Alarm stage: Arousal of body defenses—fight or flight
2. Stage of resistance or adaptation: Mobilization that contributes to fight or flight
3. Stage of exhaustion: Progressive breakdown of compensatory mechanisms. May lead to the onset of
disease
Alarm stage:
Stressor triggers the hypothalamic-pituitary-adrenal (HPA) axis.
- Activates the sympathetic nervous system (SNS).
, Resistance (adaptation) stage:
Begins with the actions of adrenal hormones.
- Cortisol, epinephrine, and norepinephrine
Exhaustion stage (allostatic overload):
Occurs only if stress continues and adaptation is not successful.
A person experiences stress when:
a demand exceeds the person's coping abilities.
Stress can results in reactions such as:
disturbances of cognition, emotion, and behavior that can adversely affect well-being
Reactive response:
Involves psychologic stressors.
Anticipatory response:
Anticipates a disruption in homeostasis.
Conditional response:
- Associates a stimulus with danger.
- May cause posttraumatic stress disorder (PTSD) or phobias.
Stress r/t diesease:
- Can precipitate disease.: Cardiac disease
- Can worsen an existing disease
